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Diffstat (limited to 'toolkit/mozapps/webextensions/GMPInstallManager.jsm')
| -rw-r--r-- | toolkit/mozapps/webextensions/GMPInstallManager.jsm | 523 |
1 files changed, 523 insertions, 0 deletions
diff --git a/toolkit/mozapps/webextensions/GMPInstallManager.jsm b/toolkit/mozapps/webextensions/GMPInstallManager.jsm new file mode 100644 index 000000000..b5987ca55 --- /dev/null +++ b/toolkit/mozapps/webextensions/GMPInstallManager.jsm @@ -0,0 +1,523 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +this.EXPORTED_SYMBOLS = []; + +const {classes: Cc, interfaces: Ci, results: Cr, utils: Cu, manager: Cm} = + Components; +// 1 day default +const DEFAULT_SECONDS_BETWEEN_CHECKS = 60 * 60 * 24; + +var GMPInstallFailureReason = { + GMP_INVALID: 1, + GMP_HIDDEN: 2, + GMP_DISABLED: 3, + GMP_UPDATE_DISABLED: 4, +}; + +Cu.import("resource://gre/modules/XPCOMUtils.jsm"); +Cu.import("resource://gre/modules/Services.jsm"); +Cu.import("resource://gre/modules/FileUtils.jsm"); +Cu.import("resource://gre/modules/Promise.jsm"); +Cu.import("resource://gre/modules/Preferences.jsm"); +Cu.import("resource://gre/modules/Log.jsm"); +Cu.import("resource://gre/modules/osfile.jsm"); +Cu.import("resource://gre/modules/Task.jsm"); +Cu.import("resource://gre/modules/GMPUtils.jsm"); +Cu.import("resource://gre/modules/addons/ProductAddonChecker.jsm"); + +this.EXPORTED_SYMBOLS = ["GMPInstallManager", "GMPExtractor", "GMPDownloader", + "GMPAddon"]; + +// Shared code for suppressing bad cert dialogs +XPCOMUtils.defineLazyGetter(this, "gCertUtils", function() { + let temp = { }; + Cu.import("resource://gre/modules/CertUtils.jsm", temp); + return temp; +}); + +XPCOMUtils.defineLazyModuleGetter(this, "UpdateUtils", + "resource://gre/modules/UpdateUtils.jsm"); + +function getScopedLogger(prefix) { + // `PARENT_LOGGER_ID.` being passed here effectively links this logger + // to the parentLogger. + return Log.repository.getLoggerWithMessagePrefix("Toolkit.GMP", prefix + " "); +} + +/** + * Provides an easy API for downloading and installing GMP Addons + */ +function GMPInstallManager() { +} +/** + * Temp file name used for downloading + */ +GMPInstallManager.prototype = { + /** + * Obtains a URL with replacement of vars + */ + _getURL: function() { + let log = getScopedLogger("GMPInstallManager._getURL"); + // Use the override URL if it is specified. The override URL is just like + // the normal URL but it does not check the cert. + let url = GMPPrefs.get(GMPPrefs.KEY_URL_OVERRIDE); + if (url) { + log.info("Using override url: " + url); + } else { + url = GMPPrefs.get(GMPPrefs.KEY_URL); + log.info("Using url: " + url); + } + + url = UpdateUtils.formatUpdateURL(url); + + log.info("Using url (with replacement): " + url); + return url; + }, + /** + * Performs an addon check. + * @return a promise which will be resolved or rejected. + * The promise is resolved with an object with properties: + * gmpAddons: array of GMPAddons + * usedFallback: whether the data was collected from online or + * from fallback data within the build + * The promise is rejected with an object with properties: + * target: The XHR request object + * status: The HTTP status code + * type: Sometimes specifies type of rejection + */ + checkForAddons: function() { + let log = getScopedLogger("GMPInstallManager.checkForAddons"); + if (this._deferred) { + log.error("checkForAddons already called"); + return Promise.reject({type: "alreadycalled"}); + } + this._deferred = Promise.defer(); + let url = this._getURL(); + + let allowNonBuiltIn = true; + let certs = null; + if (!Services.prefs.prefHasUserValue(GMPPrefs.KEY_URL_OVERRIDE)) { + allowNonBuiltIn = !GMPPrefs.get(GMPPrefs.KEY_CERT_REQUIREBUILTIN, true); + if (GMPPrefs.get(GMPPrefs.KEY_CERT_CHECKATTRS, true)) { + certs = gCertUtils.readCertPrefs(GMPPrefs.KEY_CERTS_BRANCH); + } + } + + let addonPromise = ProductAddonChecker + .getProductAddonList(url, allowNonBuiltIn, certs); + + addonPromise.then(res => { + if (!res || !res.gmpAddons) { + this._deferred.resolve({gmpAddons: []}); + } + else { + res.gmpAddons = res.gmpAddons.map(a => new GMPAddon(a)); + this._deferred.resolve(res); + } + delete this._deferred; + }, (ex) => { + this._deferred.reject(ex); + delete this._deferred; + }); + + return this._deferred.promise; + }, + /** + * Installs the specified addon and calls a callback when done. + * @param gmpAddon The GMPAddon object to install + * @return a promise which will be resolved or rejected + * The promise will resolve with an array of paths that were extracted + * The promise will reject with an error object: + * target: The XHR request object + * status: The HTTP status code + * type: A string to represent the type of error + * downloaderr, verifyerr or previouserrorencountered + */ + installAddon: function(gmpAddon) { + if (this._deferred) { + log.error("previous error encountered"); + return Promise.reject({type: "previouserrorencountered"}); + } + this.gmpDownloader = new GMPDownloader(gmpAddon); + return this.gmpDownloader.start(); + }, + _getTimeSinceLastCheck: function() { + let now = Math.round(Date.now() / 1000); + // Default to 0 here because `now - 0` will be returned later if that case + // is hit. We want a large value so a check will occur. + let lastCheck = GMPPrefs.get(GMPPrefs.KEY_UPDATE_LAST_CHECK, 0); + // Handle clock jumps, return now since we want it to represent + // a lot of time has passed since the last check. + if (now < lastCheck) { + return now; + } + return now - lastCheck; + }, + get _isEMEEnabled() { + return GMPPrefs.get(GMPPrefs.KEY_EME_ENABLED, true); + }, + _isAddonEnabled: function(aAddon) { + return GMPPrefs.get(GMPPrefs.KEY_PLUGIN_ENABLED, true, aAddon); + }, + _isAddonUpdateEnabled: function(aAddon) { + return this._isAddonEnabled(aAddon) && + GMPPrefs.get(GMPPrefs.KEY_PLUGIN_AUTOUPDATE, true, aAddon); + }, + _updateLastCheck: function() { + let now = Math.round(Date.now() / 1000); + GMPPrefs.set(GMPPrefs.KEY_UPDATE_LAST_CHECK, now); + }, + _versionchangeOccurred: function() { + let savedBuildID = GMPPrefs.get(GMPPrefs.KEY_BUILDID, null); + let buildID = Services.appinfo.platformBuildID; + if (savedBuildID == buildID) { + return false; + } + GMPPrefs.set(GMPPrefs.KEY_BUILDID, buildID); + return true; + }, + /** + * Wrapper for checkForAddons and installAddon. + * Will only install if not already installed and will log the results. + * This will only install/update the OpenH264 and EME plugins + * @return a promise which will be resolved if all addons could be installed + * successfully, rejected otherwise. + */ + simpleCheckAndInstall: Task.async(function*() { + let log = getScopedLogger("GMPInstallManager.simpleCheckAndInstall"); + + if (this._versionchangeOccurred()) { + log.info("A version change occurred. Ignoring " + + "media.gmp-manager.lastCheck to check immediately for " + + "new or updated GMPs."); + } else { + let secondsBetweenChecks = + GMPPrefs.get(GMPPrefs.KEY_SECONDS_BETWEEN_CHECKS, + DEFAULT_SECONDS_BETWEEN_CHECKS) + let secondsSinceLast = this._getTimeSinceLastCheck(); + log.info("Last check was: " + secondsSinceLast + + " seconds ago, minimum seconds: " + secondsBetweenChecks); + if (secondsBetweenChecks > secondsSinceLast) { + log.info("Will not check for updates."); + return {status: "too-frequent-no-check"}; + } + } + + try { + let {usedFallback, gmpAddons} = yield this.checkForAddons(); + this._updateLastCheck(); + log.info("Found " + gmpAddons.length + " addons advertised."); + let addonsToInstall = gmpAddons.filter(function(gmpAddon) { + log.info("Found addon: " + gmpAddon.toString()); + + if (!gmpAddon.isValid) { + log.info("Addon |" + gmpAddon.id + "| is invalid."); + return false; + } + + if (GMPUtils.isPluginHidden(gmpAddon)) { + log.info("Addon |" + gmpAddon.id + "| has been hidden."); + return false; + } + + if (gmpAddon.isInstalled) { + log.info("Addon |" + gmpAddon.id + "| already installed."); + return false; + } + + // Do not install from fallback if already installed as it + // may be a downgrade + if (usedFallback && gmpAddon.isUpdate) { + log.info("Addon |" + gmpAddon.id + "| not installing updates based " + + "on fallback."); + return false; + } + + let addonUpdateEnabled = false; + if (GMP_PLUGIN_IDS.indexOf(gmpAddon.id) >= 0) { + if (!this._isAddonEnabled(gmpAddon.id)) { + log.info("GMP |" + gmpAddon.id + "| has been disabled; skipping check."); + } else if (!this._isAddonUpdateEnabled(gmpAddon.id)) { + log.info("Auto-update is off for " + gmpAddon.id + + ", skipping check."); + } else { + addonUpdateEnabled = true; + } + } else { + // Currently, we only support installs of OpenH264 and EME plugins. + log.info("Auto-update is off for unknown plugin '" + gmpAddon.id + + "', skipping check."); + } + + return addonUpdateEnabled; + }, this); + + if (!addonsToInstall.length) { + log.info("No new addons to install, returning"); + return {status: "nothing-new-to-install"}; + } + + let installResults = []; + let failureEncountered = false; + for (let addon of addonsToInstall) { + try { + yield this.installAddon(addon); + installResults.push({ + id: addon.id, + result: "succeeded", + }); + } catch (e) { + failureEncountered = true; + installResults.push({ + id: addon.id, + result: "failed", + }); + } + } + if (failureEncountered) { + throw {status: "failed", + results: installResults}; + } + return {status: "succeeded", + results: installResults}; + } catch (e) { + log.error("Could not check for addons", e); + throw e; + } + }), + + /** + * Makes sure everything is cleaned up + */ + uninit: function() { + let log = getScopedLogger("GMPInstallManager.uninit"); + if (this._request) { + log.info("Aborting request"); + this._request.abort(); + } + if (this._deferred) { + log.info("Rejecting deferred"); + this._deferred.reject({type: "uninitialized"}); + } + log.info("Done cleanup"); + }, + + /** + * If set to true, specifies to leave the temporary downloaded zip file. + * This is useful for tests. + */ + overrideLeaveDownloadedZip: false, +}; + +/** + * Used to construct a single GMP addon + * GMPAddon objects are returns from GMPInstallManager.checkForAddons + * GMPAddon objects can also be used in calls to GMPInstallManager.installAddon + * + * @param addon The ProductAddonChecker `addon` object + */ +function GMPAddon(addon) { + let log = getScopedLogger("GMPAddon.constructor"); + for (let name of Object.keys(addon)) { + this[name] = addon[name]; + } + log.info ("Created new addon: " + this.toString()); +} + +GMPAddon.prototype = { + /** + * Returns a string representation of the addon + */ + toString: function() { + return this.id + " (" + + "isValid: " + this.isValid + + ", isInstalled: " + this.isInstalled + + ", hashFunction: " + this.hashFunction+ + ", hashValue: " + this.hashValue + + (this.size !== undefined ? ", size: " + this.size : "" ) + + ")"; + }, + /** + * If all the fields aren't specified don't consider this addon valid + * @return true if the addon is parsed and valid + */ + get isValid() { + return this.id && this.URL && this.version && + this.hashFunction && !!this.hashValue; + }, + get isInstalled() { + return this.version && + GMPPrefs.get(GMPPrefs.KEY_PLUGIN_VERSION, "", this.id) === this.version; + }, + get isEME() { + return this.id == "gmp-widevinecdm" || this.id.indexOf("gmp-eme-") == 0; + }, + /** + * @return true if the addon has been previously installed and this is + * a new version, if this is a fresh install return false + */ + get isUpdate() { + return this.version && + GMPPrefs.get(GMPPrefs.KEY_PLUGIN_VERSION, false, this.id); + }, +}; +/** + * Constructs a GMPExtractor object which is used to extract a GMP zip + * into the specified location. (Which typically leties per platform) + * @param zipPath The path on disk of the zip file to extract + */ +function GMPExtractor(zipPath, installToDirPath) { + this.zipPath = zipPath; + this.installToDirPath = installToDirPath; +} +GMPExtractor.prototype = { + /** + * Obtains a list of all the entries in a zipfile in the format of *.*. + * This also includes files inside directories. + * + * @param zipReader the nsIZipReader to check + * @return An array of string name entries which can be used + * in nsIZipReader.extract + */ + _getZipEntries: function(zipReader) { + let entries = []; + let enumerator = zipReader.findEntries("*.*"); + while (enumerator.hasMore()) { + entries.push(enumerator.getNext()); + } + return entries; + }, + /** + * Installs the this.zipPath contents into the directory used to store GMP + * addons for the current platform. + * + * @return a promise which will be resolved or rejected + * See GMPInstallManager.installAddon for resolve/rejected info + */ + install: function() { + try { + let log = getScopedLogger("GMPExtractor.install"); + this._deferred = Promise.defer(); + log.info("Installing " + this.zipPath + "..."); + // Get the input zip file + let zipFile = Cc["@mozilla.org/file/local;1"]. + createInstance(Ci.nsIFile); + zipFile.initWithPath(this.zipPath); + + // Initialize a zipReader and obtain the entries + var zipReader = Cc["@mozilla.org/libjar/zip-reader;1"]. + createInstance(Ci.nsIZipReader); + zipReader.open(zipFile) + let entries = this._getZipEntries(zipReader); + let extractedPaths = []; + + let destDir = Cc["@mozilla.org/file/local;1"]. + createInstance(Ci.nsILocalFile); + destDir.initWithPath(this.installToDirPath); + // Make sure the destination exists + if (!destDir.exists()) { + destDir.create(Ci.nsIFile.DIRECTORY_TYPE, parseInt("0755", 8)); + } + + // Extract each of the entries + entries.forEach(entry => { + // We don't need these types of files + if (entry.includes("__MACOSX") || + entry == "_metadata/verified_contents.json" || + entry == "imgs/icon-128x128.png") { + return; + } + let outFile = destDir.clone(); + // Do not extract into directories. Extract all files to the same + // directory. DO NOT use |OS.Path.basename()| here, as in Windows it + // does not work properly with forward slashes (which we must use here). + let outBaseName = entry.slice(entry.lastIndexOf("/") + 1); + outFile.appendRelativePath(outBaseName); + + zipReader.extract(entry, outFile); + extractedPaths.push(outFile.path); + // Ensure files are writable and executable. Otherwise we may be unable to + // execute or uninstall them. + outFile.permissions |= parseInt("0700", 8); + log.info(entry + " was successfully extracted to: " + + outFile.path); + }); + zipReader.close(); + if (!GMPInstallManager.overrideLeaveDownloadedZip) { + zipFile.remove(false); + } + + log.info(this.zipPath + " was installed successfully"); + this._deferred.resolve(extractedPaths); + } catch (e) { + if (zipReader) { + zipReader.close(); + } + this._deferred.reject({ + target: this, + status: e, + type: "exception" + }); + } + return this._deferred.promise; + } +}; + + +/** + * Constructs an object which downloads and initiates an install of + * the specified GMPAddon object. + * @param gmpAddon The addon to install. + */ +function GMPDownloader(gmpAddon) +{ + this._gmpAddon = gmpAddon; +} + +GMPDownloader.prototype = { + /** + * Starts the download process for an addon. + * @return a promise which will be resolved or rejected + * See GMPInstallManager.installAddon for resolve/rejected info + */ + start: function() { + let log = getScopedLogger("GMPDownloader"); + let gmpAddon = this._gmpAddon; + + if (!gmpAddon.isValid) { + log.info("gmpAddon is not valid, will not continue"); + return Promise.reject({ + target: this, + status: status, + type: "downloaderr" + }); + } + + return ProductAddonChecker.downloadAddon(gmpAddon).then((zipPath) => { + let path = OS.Path.join(OS.Constants.Path.profileDir, + gmpAddon.id, + gmpAddon.version); + log.info("install to directory path: " + path); + let gmpInstaller = new GMPExtractor(zipPath, path); + let installPromise = gmpInstaller.install(); + return installPromise.then(extractedPaths => { + // Success, set the prefs + let now = Math.round(Date.now() / 1000); + GMPPrefs.set(GMPPrefs.KEY_PLUGIN_LAST_UPDATE, now, gmpAddon.id); + // Remember our ABI, so that if the profile is migrated to another + // platform or from 32 -> 64 bit, we notice and don't try to load the + // unexecutable plugin library. + GMPPrefs.set(GMPPrefs.KEY_PLUGIN_ABI, UpdateUtils.ABI, gmpAddon.id); + // Setting the version pref signals installation completion to consumers, + // if you need to set other prefs etc. do it before this. + GMPPrefs.set(GMPPrefs.KEY_PLUGIN_VERSION, gmpAddon.version, + gmpAddon.id); + return extractedPaths; + }); + }); + }, +}; |